The Daily Index — Monday, September 29, 2025 · TLDR Index

Across today’s newsletters

Today’s Index

TLDR

APPLE BUILDS A CHATGPT-LIKE APP TO HELP TEST THE REVAMPED SIRI

Apple is currently using an internal ChatGPT-like iPhone app code-named Veritas to help test and prepare for a Siri overhaul planned for next year. The app is being used to quickly evaluate new features, including the ability to search through personal data and perform in-app actions. The internal tool marks a new phase in Apple's preparations for the Siri revamp, which could help reshape perceptions of its AI efforts.

links.tldrnewsletter.com · 7 min

TLDR AI

APPLE'S ‘VERITAS' CHATBOT IS REPORTEDLY AN EMPLOYEE-ONLY TEST OF SIRI'S AI UPGRADES

An internal employee-only chatbot, codenamed “Veritas”, is speculated to be Apple's answer to ChatGPT, but it's unknown if or when it'll be released publicly. The company has struggled to get its AI efforts off the ground after a lukewarm reception to its Apple Intelligence features and multiple delays to Siri upgrades.

theverge.com · 1 min

TLDR Web Dev

BUILDING A NEXT-GENERATION KEY-VALUE STORE AT AIRBNB

Airbnb completely re-architected its key-value store, Mussel, replacing the original version with a new NewSQL backend (v2) to meet demands like real-time checks and massive data. Mussel v2 addresses v1's limitations with better scalability, predictable performance, reduced operational complexity, and more flexible consistency options. The migration process involved a blue/green deployment strategy with shadowing, reverse traffic patterns, and a custom pipeline to guarantee zero data loss.

medium.com · 8 min

TLDR InfoSec

CHILDREN'S NAMES, PICTURES, AND ADDRESSES STOLEN IN NURSERY CHAIN HACK

A new ransomware gang called Radiant has hacked a chain of nurseries called Kido and stolen the data of 8,000 children. The breached data includes names, pictures, and addresses. The criminals contacted the BBC directly and stated that they hadn't asked for a high ransom and viewed it as compensation for performing a pentest, even though no pentest was authorized.

bbc.com · 3 min

TLDR Crypto

SPOT ETHEREUM ETFS SEE RECORD OUTFLOWS

US spot Ethereum ETFs saw ~$796M in outflows last week, their worst since launch in July 2024, as ETH briefly dipped below $4,000 before rebounding. BlackRock's ETHA lost ~$200M, while Fidelity's FETH shed ~$362M, marking the steepest two-day span of redemptions since mid-August. Spot Bitcoin ETFs also posted ~$903M in outflows, with BlackRock's IBIT holding up better than Fidelity's FBTC.

links.tldrnewsletter.com · 3 min

TLDR

META WANTS TO BECOME THE ‘BACKBONE' OF HUMANOID ROBOTS

Meta's chief technology officer, Andrew Bosworth, recently said in a meeting that he wants to focus on licensing Meta's software to other manufacturers instead of being a hardware manufacturer. Meta's new Superintelligence AI lab is working with the company's robotics group to build a 'world model' that can do software simulations to animate dexterous movements. Bosworth says that robotics will be Meta's next 'AR-sized' bet. The company has so far spent over $100 billion in cumulative investment into its augmented and virtual reality portfolio.

links.tldrnewsletter.com · 2 min

TLDR

EVOLVING THE MULTI-USER SPACEPORT

SpaceX currently launches and lands its Falcon family of rockets every two days on average without interrupting the operations of other launch providers. Launch sites of the future will need to be fully operationalized like an airport, with multiple launches a day from multiple providers. SpaceX is working with federal regulators, the federal ranges, and industry partners to realize this vision. Its goals will advance the entire launch industry's ability to fly rapidly and reliably, ideally from multiple locations to increase resilience.

spacex.com · 15 min

TLDR

WHY TODAY'S HUMANOIDS WON'T LEARN DEXTERITY

Current projects developing humanoid robots will fail at teaching them dexterity because, in order to succeed, they need both the right data and for the robots to learn the right thing. Human dexterity relies on a rich sense of touch, and it often involves elbows, the front of the body, legs, and feet. Just using visual data is not enough. In the future, there will likely be a lot of robots with different forms for different specialized jobs that humans can do. They won't look human, but they will probably all still be called humanoid robots.

rodneybrooks.com · 52 min

TLDR

WHAT IS "GOOD TASTE" IN SOFTWARE ENGINEERING?

Taste is the ability to adopt the set of engineering values that fit the current project. It's different from skill - it's possible to be technically strong but have bad taste or be technically weak with good taste. Almost every decision in software engineering is a tradeoff. Often, you have to make tradeoffs between engineering values, such as resiliency, speed, readability, correctness, and flexibility, and that's where taste comes in. Bad taste is when your preferred values are not a good fit for the project.

seangoedecke.com · 11 min